Now in the twenty and fourth day of this {a} month the children of Israel were assembled with fasting, and with sackclothes, and earth upon them.

(a) Meaning, the seventh.

Wesley's Notes

9:1 Now - The next day, but one after the feast of tabernacles, which begun on the fourteenth day, and ended on the twenty second, for their consciences having been fully awakened and their hearts filled with grief for their sins, which they were not allowed to express in that time of publick joy; now they resume their former thoughts, and recalling their sins to mind, set apart a day for solemn fasting and humiliation.

Jamieson-Fausset-Brown Bible Commentary

CHAPTER 9

Ne 9:1-3. A Solemn Fast and Repentance of the People.

1. Now in the twenty and fourth day of this month-that is, on the second day after the close of the feast of tabernacles, which commenced on the fourteenth and terminated on the twenty-second (Le 23:34-37). The day immediately after that feast, the twenty-third, had been occupied in separating the delinquents from their unlawful wives, as well, perhaps, as in taking steps for keeping aloof in future from unnecessary intercourse with the heathen around them. For although this necessary measure of reformation had been begun formerly by Ezra (Ezr 10:1-17), and satisfactorily accomplished at that time (in so far as he had information of the existing abuses, or possessed the power of correcting them) yet it appears that this reformatory work of Ezra had been only partial and imperfect. Many cases of delinquency had escaped, or new defaulters had appeared who had contracted those forbidden alliances; and there was an urgent necessity for Nehemiah again to take vigorous measures for the removal of a social evil which threatened the most disastrous consequences to the character and prosperity of the chosen people. A solemn fast was now observed for the expression of those penitential and sorrowful feelings which the reading of the law had produced, but which had been suppressed during the celebration of the feast; and the sincerity of their repentance was evinced by the decisive steps taken for the correction of existing abuses in the matter of marriage.

Matthew Henry's Concise Commentary

9:1-3 The word will direct and quicken prayer, for by it the Spirit helps our infirmities in prayer. The careful study of God's word will more and more discover to us our own sinfulness, and the plenteousness of his salvation; thus it calls us to mourn for sin, and to rejoice in him. Every discovery of the truth of God, should render us more unwearied in attendance on his sacred word, and on his worship.